The LED system shall be digitally driven using high-speed pulse width modulation (PWM).
LED系统应采用高速脉宽调制(PWM)数字式地驱动。
By utilizing the LED and light way of the instrument and employing PFM modulation, it can transmit voice from the master of the instrument to measuring point.
该装置利用光电测距仪的光源和测量光路，采用PF M调制，来完成测量主机到测量站的话音通信。
Circuitry involve LED drive circuit, signal modulation circuit, DSP circuit and display circuit.
硬件电路系统包括LED光源驱动电路、信号调制电路、DSP硬件电路、显示电路。
The method of direct modulation is: change the ready information to current signal and then inject the LD or LED to obtain the corresponding light signal, thus the idea is source modulation.
直接调制是把要传送的信息转变为电流信号注入LD或LED，从而获得相应的光信号。
The LED driver includes a clock supply to periodically output a modulation period.
此LED驱动器包括可周期性地输出调变周期的时脉源。
In order to cut down the power consumption of LCD backlight and maintain the image quality, a modulation algorithm that based on hierarchical tone mapping for LED backlight is proposed.
为了节省液晶显示器背光功耗的同时保持图像质量，提出了基于分层色调映射的LED背光调制算法。
The LED driver also includes a detection controller to receive detection data indicating whether the LED is to be detected during the modulation period.
LED驱动器也包括侦测控制器，用以接收指示在调变周期期间LED是否被侦测的侦测资料。
Functions such as frequency modulation and circuit reset are achieved with different buttons and shown on the LED digital display tube.
并且通过不同按键可以实现调频，电路复位等功能并在LED数码显示管上进行显示出来。
A driver output is provided to output the PWM duty pulse and the detection pulse to the LED within the modulation period.
所提供的驱动输出可在调变周期期间将脉宽调变工作脉冲以及侦测脉冲输出至led。
A driver output is provided to output the PWM duty pulse and the detection pulse to the LED within the modulation period.
所提供的驱动输出可在调变周期期间将脉宽调变工作脉冲以及侦测脉冲输出至led。
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